Term
| Extracellular Environment |
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Definition
| Supported by collagen and elastine protein fibers, which are derived from basal lamina. |
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Term
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Definition
| Some molecules can be transported by facilitated diffusion but its isomers will not. |
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Term
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Definition
| A carrier-mediated type of diffusion, allows stereospecificity, saturation and competition. |
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Term
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Definition
| Structurally related solutes compete for transport sites on carrier molecules. |
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Term
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Definition
| Transport rate increases as the concentration of the solute increases, untill carriers are saturated. |
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Term
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Definition
| Located in cell membranes. Na+ to extracellular fluid and K+ to intercellular fluid. |
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Term
| Ca2+-ATPase (or Ca2+ pump) |
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Definition
| In the sarcoplasmic reticulum (SR) or cell membrane. |
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Term
| H+, K+-ATPase (or proton pump) |
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Definition
| In gastric parietal cells and transports H+ into lumen of the stomache. Inhibited by omeprazole. |
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Term
| Secondary active transport |
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Definition
| A solute being transported downhill (Na+) provides enery for uphill transport. |
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Term
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Definition
| Both solutes move in same direction across membrane in secondary active transport. |
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Term
| Countertransport, Exchange or Antiport |
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Definition
| Solutes move in opposite directions across the membranes. |
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Term
| Examples of secondary active transport |
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Definition
| Na+ and Ca2+ are exchanged. |
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Term
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Definition
| Solution with more solutes |
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Term
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Definition
| Solution with less solutes than the other. |
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Term
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Definition
| Number between zero and one that describes the ease with which a solute permeates a membrane. |
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Term
| Antidiuretic Hormone (ADH) |
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Definition
| Released by posterior pituitary when dehydrated. Promotes water retention in kidneys. |
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